I am now 4 weeks past my return date and still nothing on the bonus (it lifts Mrs R to Silver but for myself there is no particular rush). Emailing the socialmedia address above got a response that a Customer Service enquiry had been raised with the reference number and this could take up to 3 weeks to investigate.

So quite a wait and no obvious problem with a direct route return on BA metal in Club both ways and 6 nights in a hotel. Base Avios and TPs posted in the normal time.